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` h 2 Sheets-Sheet 1. G. DINKEL.

MAGMA PUMP".

Patented Feb. 10, 1885.

(No Model.)

2 Sheets-Sheet 2,

(NQ Model.)

G. DINKEL. MAGMA PUMP.

Patented Feb. 10,1885.

lll'rvTTnn STaTns FATTnNT Ormea..

GEORGE DIKEL, OF JERSEY CITY, NEYV JERSEY, ASSIGNOR TO F. O. MAT- THIESSEN 8: VIEOHERS SUGAR REFININ G COMPANY, OF SAME PLACE.

MAGMA-PUMP.

SPECIFICATION forming part of Letters Patent No. 311,878, dated February 107 1885. imputation mea october e, 18er. (No maar.)

T @ZZ whom it may concern:

Be it known that I, GEORGE DINKEL, of

Jersey City, New Jersey, have invented an l Improved Magma-Pump, of which the following is aspeciiication.

In the operation of sugar-refining it is frequently required to pump the sugar-magma iroxn a lower to a higher elevation, which cannot easily be done by an ordinary suctionio pump.

My invention consists of a simple pumping apparatus, especially adapted for pumping materials having the semi-fluid character of sugar-magma.

In lcarrying out my invention I employ a cylinder, preferably horizontal, arranged beneath the magma-tank and having eduction-` ports at both ends, and having midway in its upper side a comparatively large induction- 20 port connected with the magma-tank. Vithin the cylinder is a close-fitting, suitably long plunger ailixed to the end oi' a piston-rod, which extends through the head of the cylinder and is connected with mechanism by which it is reciprocated. The plunger may be equal in length to the diameter of the induction-port. Itis preferably provided upon its upper side with a longitudinally-sliding shield. rlhis shield is longer than the plun-v ger, and is therefore brought into collision alternately with the valves or with thc opposite ends of the cylinder and held stationary during the latter part of each stroke of the plunger. At the commencement of each stroke the shield projects over in front of the advancing plunger, and hence covers the inductionport before the plunger reaches the middle of the cylinder under the induction-port. The eduction-ports are each provided with an out- 4o Wardly-yieldingself-closing valve,and are connected with the pipe or pipes through which the magma, forced alternately from the opposite'ends oi' the pump-cylinder by the movements of the plunger, is conducted to any prescribed point.

The accompanying drawings represent my invention embodied in a pump operated by steam.

Figure 1 is a central vertical longitudinal 5o section through the pump-cylinder and steamcylinder, also showing in section a portion of the magma-tank. Fig. 2 is a transverse vertical section taken through the line x a; on Fig. 1 showing the end of the magma-tank in elevation. Fig. 3 is a transverse vertical section 55 ofthe magma-tank, induction-pipe, and pumpcylinder, taken through the line y y ou Fig. l. Fig. 4 is a transverse vertical section of the pump-cylinder and shield taken through the line z z on Fig. l.

The drawings represent a round-bottomed tank, A, containinga horizontal rotating shaft, B, provided with radially-projecting spirallyarranged inclined paddles b, for thel purpose of performing the double function of mixing the sugar and liquid introduced into the tank to form the magma, and propelling the magma toward the discharge-outlet a from the bottom of the tank. An induction-pipe, O, is connected at its upper end with the discharge- 7o outlet a, and at its lower end with the induction opening or port d in the upper side of the pumpcylinder D, midway between its ends. Vithin the pump-cylinder is the closer-fitting plunger E, which may be made equal in length to the Width ofthe induction-portcl. The plunger E is affixed to the piston-trod F, which extends through stu't'ling-boxes in the heads D and Dlof the valve-chambers G g, at the opposite ends of the pump-cylinder, respectively. 8o The piston-rod F may be aliixed to the piston of a steam-cylinder, and be reci procated bysteam, or may be reciprocatedin any other convenient way. Preferably the plunger E is provided upon its upper side with the recess E to receive 8 5 the sliding shield or gate e, which, being longer than the plunger, covers the induction-port d before the plunger has madehalt' its stroke,and thus prevents the magma in front of the advancing plunger from being forced back 9o through the inductioi'r-port, and compels its discharge through that one of the inductionports toward which the plunger is moving. The gate c, as will be seen, embraces the upper part of the plunger E, inclosing rather more than one-half oi'.it, and is therefore eapable of completely closing the induction-port d, which extends nearly half-way around the pump-cylinder. In the center of its upper side the gate is provided with the V- Shaped 10o longitudinal rib c. This rib is engaged by the V- shaped groove e2, formed lengthwise in the wall of the pump-cylinder, and along the under side of the stay-bar e3, erected across the middle of the induction-port d. The open opposite ends of the pump-cylinder constitute the eduction-ports G g', respectively. The eduction-port G is closed by the outwardlyyielding valve G, and the eduction-port g is closed by the outwardlyyielding valve g2. The valve-chambers are both of larger diameter than the pump-cylinder, and the ends of the pump-cylinder constitute the 'seats G3 g3 for the valves GZ g2, respectively. The valves Gzg2 are centrally-perforated disks sliding on the piston-rod F, and are pressed toward their seats G3 g3 by the expanding springs GL g4, respectively. The magma is discharged from the valve-chambers through the outlets H and h into the pipes H h for conducting it in any prescribed directions.' The two pipes H h" may be employed for conducting the magma to two different points, or they may be joined to a single conducting-pipe in case all the magma is to be conducted to the same point.

1n operation the edge ofthe sliding gate on the advancing side of the plunger is, near the close of the stroke, brought into collision with lthe valve and arrested, while the plunger completes its stroke. lf desired7 a stop may be arranged at each end of the pump-cylinder, so that the gate e may be arrested by being brought into collision with one of these stops at each stroke.

In order to prevent any possibility of the dislodginent of the gate from the plunger,

of the magma back through the inductionport d; but, after the advancing end of the plunger has passed the inductionport, the magma in front of the plunger' during the remainder ofthe stroke will be expelled through the eduction-port toward which the plunger is moving. Astheplungerpassestheinductionport it permits the magma from the tank to fall behind it into the pump-cylinder, preparatory to being expelled through the eductionport at the opposite end of the pump-cylinder by the return-stroke of the plunger.

I claim as my invention- 1.'In pumps for pumping semi-duids, acylinder having midway between its ends an induction-port of suitably large area, and having at its ends eduction ports, respectively provided with outwardly-yielding self-closing valves, in combination with a suitably elongated reciprocating plunger within the cylinder.

2. A cylinder -having midway between its ends an-induction-port of suitably large area, and having at its ends eduction-ports, respectively provided with outwardly-yielding selfclosing valves, in combination with the reciprocating plunger E, provided with the sliding shield or gate e, as and for the purpose set forth.

3. The reciprocating plunger E, in combination with the sliding shield or gate e, provided upon its opposite ends with the downwardly-projecting lips e5, as and for the purpose set forth.

4. The reciprocating plunger E,and the sliding lshield or gate e, provided with the longitudinal rib e', in combination with a groove, e2, in the wall of the cylinder D, as and for the purpose set forth.

GEORGE DINKEL.

Witnesses:

M. L. ADAMS,

R. C. HoMEs. v

It is hereby oertied .that in Letters Patent No. 311,878, granted February 10, 1885,

upon the Aippliofntion of George Dinkel, of Jersey City, New Jersey, for an improve ment in Magma-Pumps, the name of the assignee was erroneously Written and printed F. O. Matthiessen und Wieehers Sugar Refining Company, Whereas it should have been Written and printed F. O. Matthiessen and Wir/chers Sugar Refining Company and that the proper correction has been mede in the iiles and records pertaining to the oase in the Patent Ofoe, and should be read in the Letters Patent to make it conform thereto.

Signed, oouritersigued, and sealed this 17th day of March, A. D. 1885.

M. L. JOSLYN, Acting Secretary 0]" the Interior.

[SEAL] Gountersigned:

R. G. DYRENFORTH,

Acting Commissioner ofPaftents. 

